Apple iTunes - http://www.apple.com/itunes/download/ - Buy music online or play it.

ATI or nVidia | NGO - http://www.ngohq.com/ - Modified ATI, nVidia graphics drivers, may include system board as well. Basically optimized for speed or performance.

ATI or nVidia | XTreme-G - http://www.tweaksrus.com/ - Modified ATI, nVidia graphics drivers, may include system board as well. Basically optimized for speed or performance.

Atomic Clock Sync - http://www.worldtimeserver.com/atomic-clock/ - Syncronize your system clock with a server that retrieves it from an Atomic source.

CCleaner - http://www.ccleaner.com/ - Clears out temp, cache, registry, etc.

CDBurnerXP Pro - http://www.cdburnerxp.se/ - Allows you to burn CD-R, DVD-R etc.

RegCompact.NET - http://www.experimentalscene.com/ - Reduces the size of your registry.

RyanVM's MSFN Files Page - http://www.ryanvm.net/msfn/ - Slipstream Hotfixes or Service Packs.

Startup Control Panel - http://www.mlin.net/ - Edit the list of applications that start when you boot.

The GodFather - http://users.otenet.gr/~jtcliper/tgf/ - An amazing mp3, mp4, etc. tool for organizing, playing, converting, or renaming.

THE Rename - http://www.herve-thouzard.com/ - Rename massive amounts of files using a variety of options.

TUGZip - http://www.tugzip.com - Best utility for compressing / uncompressing of files.

Tweak UI - http://www.microsoft.com/windowsxp/downloads/powertoys/xppowertoys.mspx - Alter certain functions of Windows XP without the need to search extensively.

VideoLan Client Media Player - http://www.videolan.org/ - Play any kind of multimedia file with ease, no codecs needed.

XP-AntiSpy - http://www.xp-antispy.org/ - Alter Windows XP registry settings otherwise hidden.

nice....
i wish i could suggest some.
but am too much of a beginner.:m:

Pegasus. The best email client http://pmail.com
GIMP
Shareaza
mplayer with MPUI.

VMWare

What is it?
Virtualisation software

What does it do?
Allows you to run operating systems inside other operating systems. Instance, run linux in WinXP without having to get another PC or dual boot.

Great for tech students - (build a test lab off just 1 or 2 pcs), enthusiasts or people that like trying out new software.

Where?
Free Virtualisation Server/Player & Applications (http://www.vmware.com/products/free_virtualization.html)
Bottom of the page has heaps of aplications to run with the software.